Extreme Heat Warning
URGENT - WEATHER MESSAGE
National Weather Service Las Vegas NV
101 PM PDT Thu Mar 19 2026
AZZ001>003-036-CAZ522>527-NVZ016-017-020>022-201015-
/O.CON.KVEF.XH.W.0001.000000T0000Z-260323T0300Z/
Northwest Plateau-Lake Havasu and Fort Mohave-Northwest Deserts-
Lake Mead National Recreation Area-Death Valley National Park-
Western Mojave Desert-Eastern Mojave Desert-Morongo Basin-Cadiz
Basin-San Bernardino County-Upper Colorado River Valley-Northeast
Clark County-Western Clark and Southern Nye County-Las Vegas
Valley-Lake Mead National Recreation Area-Southern Clark County-
Including the cities of Cal-Nev-Ari, Mesquite, Valentine, Golden
Valley, Wikieup, Mountain Pass, Pipe Spring National Monument,
Boulder City, Fort Irwin, Overton, Henderson, Lake Havasu City,
Mohave Valley, Desert Hills, Topock, Pahrump, North Las Vegas,
Laughlin, Bullhead City, Needles, Mitchell Caverns, Yucca,
Kingman, Moapa, Baker, Amargosa Valley, Las Vegas, Hoover Dam,
Indian Springs, Barstow, Western Grand Canyon, Oatman, Shoshone,
Vidal Junction, Colorado City, Twentynine Palms, Primm, Tuweep,
Dolan Springs, Furnace Creek, Stovepipe Wells, Desert Rock,
Daggett, Morongo Valley, Yucca Valley, Mt Trumbull, and
Searchlight
101 PM PDT Thu Mar 19 2026 /101 PM MST Thu Mar 19 2026/
...EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM PDT /8 PM MST/
SUNDAY...
* WHAT...Dangerously hot temperatures climbing to near-30 degrees
above seasonal normals.
* WHERE...Portions of northwest Arizona, southeast California, and
southern Nevada.
* WHEN...Until 8 PM PDT /8 PM MST/ Sunday.
* IMPACTS...Heat-related illnesses increase significantly during
extreme heat events.
* ADDITIONAL DETAILS...Extreme early-season heat coupled with high
tourism rates will make this heat very dangerous, particularly for
those not acclimated to the heat and/or traveling from cooler
climates. Numerous daily and monthly heat records are in jeopardy
through at least Sunday.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.
Do not leave young children and pets in unattended vehicles. Car
interiors will reach lethal temperatures in a matter of minutes.
Take extra precautions when outside. Wear lightweight and
loose-fitting clothing. Try to limit strenuous activities to early
morning or evening. Take action when you see symptoms of heat
exhaustion and heat stroke.
To reduce risk during outdoor work, the Occupational Safety and
Health Administration recommends scheduling frequent rest breaks in
shaded or air-conditioned environments. Anyone overcome by heat
should be moved to a cool and shaded location. Heat stroke is an
emergency! Call 9 1 1.
Monitor the latest forecasts and warnings for updates.
&&
$$
Red Flag Warning
URGENT - FIRE WEATHER MESSAGE
National Weather Service Riverton WY
1255 PM MDT Thu Mar 19 2026
WYZ277>279-201300-
/O.CON.KRIW.FW.W.0004.000000T0000Z-260322T0300Z/
Lincoln and Uinta Counties/Lower Elevations-
Upper Green River Basin/Rock Springs BLM-
Sweetwater County/Rock Springs BLM/Flaming Gorge NRA-
1255 PM MDT Thu Mar 19 2026
...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT SATURDAY...
* IMPACTS: Low Humidities...Unseasonably Warm Temperatures...and
Strong Gusty Winds could cause erratic fire behavior.
* AFFECTED AREA:
In Southwest WY Fire Zones...277...279.
In West Central WY Fire Zone....278.
* COUNTIES AFFECTED:
In Southwest WY...Sweetwater...Uinta.
In West Central WY...Lincoln...Sublette.
* WIND: West 15 to 25 mph with gusts up to 40 mph, especially on
Saturday.
* HUMIDITY: As low as 10 percent.
* TEMPERATURES: Highs in the lower 70s. Lows in the upper 30s.
* ADDITIONAL DETAILS: Conditions are expected to improve during the
overnight hours.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Red Flag Warning means that critical fire weather conditions are
either occurring now....or will shortly. A combination of strong
winds...low relative humidity...and warm temperatures can
contribute to extreme fire behavior.
&&
$$
URGENT - FIRE WEATHER MESSAGE
National Weather Service Riverton WY
1255 PM MDT Thu Mar 19 2026
WYZ276-282-283-287-201300-
/O.CON.KRIW.FW.W.0004.000000T0000Z-260322T0300Z/
Cody Foothills-South Bighorn Basin/Worland BLM-
Upper Wind River Basin/Wind River Basin-Owl Creek Mountains-
1255 PM MDT Thu Mar 19 2026
...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT SATURDAY...
* IMPACTS: Low Humidities...Unseasonably Warm Temperatures...and
Strong Gusty Winds could cause erratic fire behavior.
* AFFECTED AREA:
In Central WY Fire Zone....283.
In North Central WY Fire Zones...276...282...287.
* COUNTIES AFFECTED:
In Central WY...Fremont.
In North Central WY...Hot Springs...Park...Washakie.
* WIND: West 20 to 30 mph with gusts up to 55 mph, especially on
Saturday.
* HUMIDITY: As low as 7 percent.
* TEMPERATURES: Highs in the upper 70s. Lows in the mid 40s.
* ADDITIONAL DETAILS: Conditions are expected to improve during the
overnight hours.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Red Flag Warning means that critical fire weather conditions are
either occurring now....or will shortly. A combination of strong
winds...low relative humidity...and warm temperatures can
contribute to extreme fire behavior.
&&
$$
URGENT - FIRE WEATHER MESSAGE
National Weather Service Riverton WY
1255 PM MDT Thu Mar 19 2026
WYZ280-281-289-201300-
/O.CON.KRIW.FW.W.0004.000000T0000Z-260322T0300Z/
Natrona County/Casper BLM-Johnson County/Casper BLM-
Granite/Green/Ferris/Rattlesnake Mountains-
1255 PM MDT Thu Mar 19 2026
...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT SATURDAY...
* IMPACTS: Low Humidities...Unseasonably Warm Temperatures...and
Strong Gusty Winds could cause erratic fire behavior.
* AFFECTED AREA:
In Central WY Fire Zones...280...289.
In North Central WY Fire Zone....281.
* COUNTIES AFFECTED:
In Central WY...Fremont...Natrona.
In North Central WY...Johnson.
In Southwest WY...Sweetwater.
* WIND: West 20 to 30 mph with gusts up to 45 mph, especially on
Saturday.
* HUMIDITY: As low as 8 percent.
* TEMPERATURES: Highs in the upper 70s. Lows in the mid 40s.
* ADDITIONAL DETAILS: Conditions are expected to improve during the
overnight hours.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Red Flag Warning means that critical fire weather conditions are
either occurring now....or will shortly. A combination of strong
winds...low relative humidity...and warm temperatures can
contribute to extreme fire behavior.
&&
$$
http://weather.gov/riverton
Heat Advisory
URGENT - WEATHER MESSAGE
National Weather Service Las Vegas NV
101 PM PDT Thu Mar 19 2026
CAZ520-NVZ014-015-201015-
/O.CON.KVEF.HT.Y.0001.000000T0000Z-260322T0300Z/
Owens Valley-Esmeralda and Central Nye County-Lincoln County-
Including the cities of Lone Pine, Olancha, Independence, Beatty,
Goldfield, Panaca, Rachel, Silver Peak, Pioche, Alamo, Hiko,
Caliente, Bishop, and Dyer
101 PM PDT Thu Mar 19 2026
...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM PDT SATURDAY...
* WHAT...Hot temperatures climbing to near-30 degrees above seasonal
normals.
* WHERE...In California, Owens Valley. In Nevada, Esmeralda and
Central Nye County and Lincoln County.
* WHEN...Until 8 PM PDT Saturday.
* IMPACTS...Heat-related illnesses increase significantly during
extreme heat events.
* ADDITIONAL DETAILS...Extreme early-season heat coupled with high
tourism rates will make this heat very dangerous, particularly for
thMSose not acclimated to the heat and/or traveling from cooler
climates. Numerous daily and monthly heat records are in jeopardy
through at least Sunday.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.
Take extra precautions when outside. Wear lightweight and
loose-fitting clothing. Try to limit strenuous activities to early
morning or evening. Take action when you see symptoms of heat
exhaustion and heat stroke.
To reduce risk during outdoor work, the Occupational Safety and
Health Administration recommends scheduling frequent rest breaks in
shaded or air-conditioned environments. Anyone overcome by heat
should be moved to a cool and shaded location. Heat stroke is an
emergency! Call 9 1 1.
Monitor the latest forecasts and warnings for updates.
&&
$$
For more information from the National Weather Service visit
http://weather.gov/lasvegas
KEG
Fire Weather Watch
URGENT - FIRE WEATHER MESSAGE
National Weather Service Grand Junction CO
938 PM MDT Thu Mar 19 2026
COZ200-202-202100-
/O.CON.KGJT.FW.A.0001.260321T1700Z-260322T0200Z/
Little Snake Forecast Area-White River Forecast Area-
938 PM MDT Thu Mar 19 2026
...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SATURDAY MORNING
THROUGH SATURDAY EVENING FOR GUSTY WINDS, LOW RELATIVE HUMIDITY
AND DRY FUELS FOR FIRE WEATHER ZONES 200 AND 202 BELOW
8000 FEET...
* AFFECTED AREA...In Colorado, Fire Weather Zone 200 Little
Snake Forecast Area and Fire Weather Zone 202 White River
Forecast Area below 8000 feet.
* TIMING...From Saturday morning through Saturday evening.
* WINDS...Southwest 15 to 25 mph with gusts up to 40 mph.
* RELATIVE HUMIDITY...9 to 14 percent.
* IMPACTS...Fires will catch and spread quickly. Exercise
extreme caution with any outdoor burning.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Fire Weather Watch means that critical fire weather conditions
are forecast to occur. Listen for later forecasts and possible
Red Flag Warnings.
&&
$$
Hazardous Weather Outlook
Hazardous Weather Outlook
National Weather Service Riverton WY
202 AM MDT Thu Mar 19 2026
WYZ001>020-022>030-201300-
Yellowstone National Park-Absaroka Mountains-Cody Foothills-
North Bighorn Basin-Southwest Bighorn Basin-Southeast Bighorn Basin-
Owl Creek and Bridger Mountains-Bighorn Mountains West-
Bighorn Mountains Southeast-Northeast Johnson County-
Southeast Johnson County-Teton and Gros Ventre Mountains-
Jackson Hole-Wind River Mountains West-Wind River Mountains East-
Upper Wind River Basin-Wind River Basin-Lander Foothills-
Green Mountains and Rattlesnake Range-
Natrona County Lower Elevations-Casper Mountain-Star Valley-
Salt River and Wyoming Ranges-Upper Green River Basin Foothills-
Upper Green River Basin-South Lincoln County-
Rock Springs and Green River-Flaming Gorge-East Sweetwater County-
202 AM MDT Thu Mar 19 2026
...Red Flag Warning in effect for much of central and southern
Wyoming through Saturday evening...
This Hazardous Weather Outlook is for Western and Central Wyoming.
.DAY ONE...Today and tonight.
A combination of gusty wind, low humidity and dry fuels will bring
elevated to critical fire weather. Please see Red Flag Warnings
and forecasts for details. Record high temperatures likely for
most locations.
.DAYS TWO THROUGH SEVEN...Friday through Wednesday.
Friday through Saturday....Elevated to critical fire weather
continues across much of the area, with the most impactful on
conditions on Saturday. Again, please see Red Flag Warnings and
forecasts for details. All time record high March temperatures
likely at many locations.
Sunday...Elevated fire weather possible in southern Wyoming.
.SPOTTER INFORMATION STATEMENT...
Weather spotters are encouraged to report significant weather
conditions according to Standard Operating Procedures.
$$
